Well, I don't like how you have to refresh the page to see the new comments people have made on games, profiles, and especially forums. EX: I type a long comment asking what the previous commenter said, and the person that commented while I was typing answered my question and more... So I have an idea that the comments come up instantly as soon as the person that commented pressed the button submit/add reply.
Actually it's load and lock. Lock and load just rolls off the tongue, but soldiers have to load their rifles with ammunition before locking the mechanism.
I do think this would be nice, I do hate the 30 second rule, though. I think you should always see the submit button but it pops up a message that say "Please Wait 30 Seconds Before Commenting Again."